package tianxinyi.rbac.service.array;

import tianxinyi.rbac.domain.dto.RoleDto;
import tianxinyi.rbac.domain.entity.Role;
import tianxinyi.rbac.domain.vo.RoleVo;
import tianxinyi.rbac.domain.vo.Result;
import tianxinyi.rbac.service.IRoleService;
import tianxinyi.rbac.service.IUserService;



public class RoleService extends BaseService<Role, RoleDto, RoleVo> implements IRoleService {

    private IUserService userService;

    private static IRoleService singleton;

    private RoleService() {
        data = new Role[DATA_SIZE + 1];
        temp = new RoleVo[DATA_SIZE];
    }

    public static IRoleService getInstance() {
        if(singleton == null) {
            singleton = new RoleService();
        }
        return singleton;
    }

    @Override
    RoleVo convertToVo(Role role) {
        return  new RoleVo(role.getId(), role.name, role.dataScope);
    }

    @Override
    Role createEntity(RoleDto dto,int id){
        return new Role(id, dto.name, dto.dataScope);
    }

    @Override
    void updateEntity(RoleDto dto,Role role) {
        role.name = dto.name;
        role.dataScope = dto.dataScope;
    }

    @Override
    public Result delete(int id) {
        if(!existsById(id)){
            return Result.failure("删除失败，不存在该数据");
        }
        if(userService == null) {
            userService = UserService.getInstance();
        }
        if (userService.roleInUse(id)) {
            return Result.failure("删除失败，有用户具有该角色，不能删除");
        }
        data[id] = null;
        return Result.success("删除成功",null);
    }
}
